What is the difference between percent yield and theoretical yield?

[KristySpra]

I’m learning about chemical reactions and need help understanding what theoretical yield and percent yield mean, and how to calculate them. Can someone explain with examples?

 

[DeeReich70]

Theoretical yield is the maximum amount of product that could form from given reactants, calculated using stoichiometry and assuming perfect reaction conditions. Percent yield measures the efficiency of a reaction by comparing the actual yield obtained experimentally to the theoretical yield, expressed as a percentage.

 

[Lucas]

The theoretical yield is the maximum amount of product that can be produced from a chemical reaction based on stoichiometric calculations, assuming perfect conditions with no losses. The percent yield, on the other hand, measures how efficient the reaction actually was by comparing the actual yield obtained in the lab to the theoretical yield. It shows how close the experiment came to the ideal outcome.